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CVE-2026-33778

8.7 high SSVC exploitation: none Analyzed
NVD · CVE.org

An Improper Validation of Syntactic Correctness of Input vulnerability in the IPsec library used by kmd and iked of Juniper Networks Junos OS on SRX Series and MX Series allows an unauthenticated, network-based attacker to cause a complete Denial-of-Service (DoS). If an affected device receives a specifically malformed first ISAKMP packet from the initiator, the kmd/iked process will crash and restart, which momentarily prevents new security associations (SAs) for from being established. Repeated exploitation of this vulnerability causes a complete inability to establish new VPN connections. This issue affects Junos OS on SRX Series and MX Series: * all versions before 22.4R3-S9, * 23.2 version before 23.2R2-S6, * 23.4 version before 23.4R2-S7, * 24.2 versions before 24.2R2-S4, * 24.4 versions before 24.4R2-S3, * 25.2 versions before 25.2R1-S2, 25.2R2.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 8.7 · juniperNVD modified 2026-10-26 21:10

Affected (CPE criteria) 57

  • cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:22.4:-:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:22.4:r1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:22.4:r1-s1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:22.4:r1-s2:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:22.4:r2:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:22.4:r2-s1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:22.4:r2-s2:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:22.4:r3:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:22.4:r3-s1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:22.4:r3-s2:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:22.4:r3-s3:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:22.4:r3-s4:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:22.4:r3-s5:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:22.4:r3-s6:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:22.4:r3-s7:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:22.4:r3-s8:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.2:-:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.2:r1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.2:r1-s1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.2:r1-s2:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.2:r2:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.2:r2-s1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.2:r2-s2:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.2:r2-s3:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.2:r2-s4:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.2:r2-s5:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.4:-:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.4:r1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.4:r1-s1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.4:r1-s2:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.4:r2:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.4:r2-s1:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.4:r2-s2:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.4:r2-s3:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.4:r2-s4:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.4:r2-s5:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:23.4:r2-s6:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:24.2:-:*:*:*:*:*:*
  • cpe:2.3:o:juniper:junos:24.2:r1:*:*:*:*:*:*
  • and 17 more

References 1